The 512 GB tier of the iPhone 17 Pro Max on XFINITY Mobile.

XFINITY Mobile pricing for the 512 GB iPhone 17 Pro Max isn't currently published in our database. Check XFINITY Mobile directly for the latest offer.
512 GB is comfortable for most users — about 30,000 photos, ~50 high-quality apps with media, plus several hours of 4K video. Heavy ProRes / RAW shooters and offline-music collectors should consider 512 GB or higher; iPhone 17 Pro Max doesn't expand via SD card.
The 256 GB tier on XFINITY Mobile typically runs a few dollars more per month than 512 GB on the same plan. Check the storage-tier table above for the live monthly delta.
No — iPhone 17 Pro Max doesn't support expandable storage, and Apple/Samsung don't offer post-purchase storage upgrades. Pick the tier that fits your two-year plan.
XFINITY Mobile offers trade-in toward new iPhone 17 Pro Max purchases — credit varies by your old phone's condition and any active promo. Higher storage tiers typically receive proportionally larger credits.